Updated:May, 2026

10 Best Simpson Gas Pressure Washer Pressure Washers of 2026

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Best Choice

9.9

Outstanding

SIMPSON

Simpson 3400 PSI Gas Pressure Washer, 2.5 GPM Residential Power Washer, Cold Water, 25' Hose, Clean Machine, 49-State Compliant (CM61083)

Why We Love It

SIMPSON PRESSURE WASHER FOR HOMEOWNERS: The Simpson Clean Machine gas power washer cleans decks, driveways, siding, fencing, patio furniture, and cars; The cold water machine is great for homeowners; 49-State Compliant (Not for sale in California)
ENGINE & PUMP: 208 cc CRX engine starts easily and includes low-oil shutdown; 3400 PSI 2.5 GPM OEM Technologies axial cam pump is maintenance-free with a thermal relief valve to help prevent overheating
LONG HOSE REACH: The Simpson MorFlex series 25' high-pressure hose resists kinks and abrasion; Non-marring hose helps protect finished surfaces; Quick-connect fittings speed setup
EASY MOBILITY: 10" premium pneumatic tires roll smoothly over gravel, grass, and curbs; Balanced layout improves transport; The welded steel frame with powder-coated finish is easy to assemble and resists corrosion; 37" L x 30" W x 21" H; 64 lb.
PRESSURE WASHER ACCESSORIES FOR DIY-ERS: Four quick-connect pressure washer tips (0°, 15°, 40°, and soap nozzle) cover tasks from washing windows to car cleaning; Ergonomic front-load M22 pressure washer gun and 16" spray wand included

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Why We Love It

SIMPSON PRESSURE WASHER FOR HOMEOWNERS: The Simpson Clean Machine gas power washer cleans decks, driveways, siding, fencing, patio furniture, and cars; The cold water machine is great for homeowners; 49-State Compliant (Not for sale in California)
ENGINE & PUMP: 208 cc CRX engine starts easily and includes low-oil shutdown; 3400 PSI 2.5 GPM OEM Technologies axial cam pump is maintenance-free with a thermal relief valve to help prevent overheating
LONG HOSE REACH: The Simpson MorFlex series 25' high-pressure hose resists kinks and abrasion; Non-marring hose helps protect finished surfaces; Quick-connect fittings speed setup
EASY MOBILITY: 10" premium pneumatic tires roll smoothly over gravel, grass, and curbs; Balanced layout improves transport; The welded steel frame with powder-coated finish is easy to assemble and resists corrosion; 37" L x 30" W x 21" H; 64 lb.
PRESSURE WASHER ACCESSORIES FOR DIY-ERS: Four quick-connect pressure washer tips (0°, 15°, 40°, and soap nozzle) cover tasks from washing windows to car cleaning; Ergonomic front-load M22 pressure washer gun and 16" spray wand included

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Value for Money

9.5

Excellent

SIMPSON

Simpson 4400 PSI Gas Pressure Washer, 4.0 GPM Commercial Power Washer, Cold Water, 50' Hose, PowerShot, 49-State Compliant (PS60843) - Black

25% Off

Main Highlights

Professional Performance: Easy-to-assemble and easy-to-start with its CRX 420cc premium engine, the PowerShot power washer is great for contractors who specialize in deck cleaning, wood restoration, paint preparation, and all other professional services
Power and Durability: A powerful, reliable, maintenance-free AAA industrial triplex plunger pump delivers 4400 PSI at 4.0 GPM and includes thermal relief to prevent overheating; PowerBoost Technology delivering higher pressure at the nozzle
Sturdy and Portable: The welded steel frame construction with powder coated finish offers durability and corrosion resistance; 13-inch premium pneumatic tires deliver ease of maneuverability across various terrain and uneven ground
Includes Quality Simpson Accessories: Monster 3/8-inch x 50-foot high-pressure hose is kink and abrasion resistant hose with quick connect fittings and polyurethane outer jacket; 5 Quick connect nozzle tips: 0°, 15°, 25°, 40° and Soap; Ergonomic spray gun 31-inch steel wand/lance
Important Notes: 49-State Compliant; Does not ship to California; Keep max fuel level 1/2 Inch below bottom of filler neck to avoid spillage; All pressure washers are 100% functionally tested in factory & may contain minimum residual fuel/oil or fuel odor

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Main Highlights

Professional Performance: Easy-to-assemble and easy-to-start with its CRX 420cc premium engine, the PowerShot power washer is great for contractors who specialize in deck cleaning, wood restoration, paint preparation, and all other professional services
Power and Durability: A powerful, reliable, maintenance-free AAA industrial triplex plunger pump delivers 4400 PSI at 4.0 GPM and includes thermal relief to prevent overheating; PowerBoost Technology delivering higher pressure at the nozzle
Sturdy and Portable: The welded steel frame construction with powder coated finish offers durability and corrosion resistance; 13-inch premium pneumatic tires deliver ease of maneuverability across various terrain and uneven ground
Includes Quality Simpson Accessories: Monster 3/8-inch x 50-foot high-pressure hose is kink and abrasion resistant hose with quick connect fittings and polyurethane outer jacket; 5 Quick connect nozzle tips: 0°, 15°, 25°, 40° and Soap; Ergonomic spray gun 31-inch steel wand/lance
Important Notes: 49-State Compliant; Does not ship to California; Keep max fuel level 1/2 Inch below bottom of filler neck to avoid spillage; All pressure washers are 100% functionally tested in factory & may contain minimum residual fuel/oil or fuel odor

9.5

Excellent

SIMPSON

Simpson 3500 PSI Gas Pressure Washer, 2.5 GPM Commercial Power Washer, Honda Engine, Cold Water, 25' Hose, PowerShot, 49-State Compliant (PS3228)

Main Highlights

SIMPSON PRESSURE WASHER FOR PROFESSIONALS: The Simpson PowerShot gas power washer cleans decks, driveways, siding, fencing, equipment, and graffiti; The cold water machine is great for contractors; 49-State Compliant (Not for sale in California)
ENGINE & PUMP: Premium Honda GX200 engine starts easily and includes low-oil shutdown; 3300 PSI 2.5 GPM AAA triplex pump with an integrated unloader and thermal relief to prevent overheating; Designed for a long service life
LONG HOSE REACH: The Simpson Morflex series 25' high-pressure hose resists kinks and abrasion; Non-marring polyurethane jacket helps protect finished surfaces; Pump/Hose Connection: Threaded M22 connection
EASY MOBILITY: 10" premium pneumatic tires roll smoothly over gravel, grass, and curbs; Balanced layout improves transport; The welded steel frame with powder-coated finish is easy to assemble and resists corrosion; 21" L x 24" W x 34" H; 74 lb.
PRO PRESSURE WASHER ACCESSORIES: Five quick-connect pressure washer tips (0°, 15°, 25°, 40°, and soap nozzle) cover tasks from stripping paint to car cleaning; Rear-load M22 pressure washer gun and 16" spray wand included

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Main Highlights

SIMPSON PRESSURE WASHER FOR PROFESSIONALS: The Simpson PowerShot gas power washer cleans decks, driveways, siding, fencing, equipment, and graffiti; The cold water machine is great for contractors; 49-State Compliant (Not for sale in California)
ENGINE & PUMP: Premium Honda GX200 engine starts easily and includes low-oil shutdown; 3300 PSI 2.5 GPM AAA triplex pump with an integrated unloader and thermal relief to prevent overheating; Designed for a long service life
LONG HOSE REACH: The Simpson Morflex series 25' high-pressure hose resists kinks and abrasion; Non-marring polyurethane jacket helps protect finished surfaces; Pump/Hose Connection: Threaded M22 connection
EASY MOBILITY: 10" premium pneumatic tires roll smoothly over gravel, grass, and curbs; Balanced layout improves transport; The welded steel frame with powder-coated finish is easy to assemble and resists corrosion; 21" L x 24" W x 34" H; 74 lb.
PRO PRESSURE WASHER ACCESSORIES: Five quick-connect pressure washer tips (0°, 15°, 25°, 40°, and soap nozzle) cover tasks from stripping paint to car cleaning; Rear-load M22 pressure washer gun and 16" spray wand included

9.2

Excellent

SIMPSON

Simpson 3400 PSI Gas Pressure Washer and 15-Inch Surface Cleaner, 2.5 GPM Residential Power Washer, 25' Hose, Clean Machine, 49-State (CM61248-S)

Main Highlights

SIMPSON PRESSURE WASHER FOR HOMEOWNERS: The Clean Machine gas power washer and Surface Cleaner kit is great for homeowners; Easily clean sidewalks, driveways, walls, fencing, patio furniture, and cars; 49-State Compliant (Not for sale in California)
ENGINE & PUMP: 208 cc CRX engine starts easily and includes low-oil shutdown; Maintenance-free 3400 PSI 2.5 GPM OEM Technologies axial cam pump includes a thermal relief valve to prevent overheating; 25' hose is non-marring and abrasion-resistant
EASY MOBILITY: 10" premium pneumatic tires roll smoothly over gravel, grass, and curbs; Balanced layout improves transport; The welded steel frame with powder-coated finish is easy to assemble and resists corrosion; 37" L x 30" W x 21" H; 64 lb.
INCLUDES PRESSURE WASHER SURFACE CLEANER: Dual stainless steel nozzles and powder coated steel shroud add durability and prevent overspray; Provides 10X more coverage than a standard spray nozzle to complete projects more quickly
PRESSURE WASHER ACCESSORIES FOR DIY-ERS: 25' hose and four quick-connect pressure washer tips (0°, 15°, 40°, and soap nozzle) cover tasks from washing windows to car cleaning; Ergonomic M22 pressure washer gun and 16" spray wand included

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Main Highlights

SIMPSON PRESSURE WASHER FOR HOMEOWNERS: The Clean Machine gas power washer and Surface Cleaner kit is great for homeowners; Easily clean sidewalks, driveways, walls, fencing, patio furniture, and cars; 49-State Compliant (Not for sale in California)
ENGINE & PUMP: 208 cc CRX engine starts easily and includes low-oil shutdown; Maintenance-free 3400 PSI 2.5 GPM OEM Technologies axial cam pump includes a thermal relief valve to prevent overheating; 25' hose is non-marring and abrasion-resistant
EASY MOBILITY: 10" premium pneumatic tires roll smoothly over gravel, grass, and curbs; Balanced layout improves transport; The welded steel frame with powder-coated finish is easy to assemble and resists corrosion; 37" L x 30" W x 21" H; 64 lb.
INCLUDES PRESSURE WASHER SURFACE CLEANER: Dual stainless steel nozzles and powder coated steel shroud add durability and prevent overspray; Provides 10X more coverage than a standard spray nozzle to complete projects more quickly
PRESSURE WASHER ACCESSORIES FOR DIY-ERS: 25' hose and four quick-connect pressure washer tips (0°, 15°, 40°, and soap nozzle) cover tasks from washing windows to car cleaning; Ergonomic M22 pressure washer gun and 16" spray wand included

9.0

Excellent

SIMPSON

Simpson 4200 PSI Gas Pressure Washer, 4.0 GPM Commercial Power Washer, Cold Water, Honda GX390 Engine, 50' Hose, Aluminum Series, 49-State Compliant (ALH4240)

7% Off

Main Highlights

SIMPSON PRESSURE WASHER FOR PROFESSIONALS: The Simpson Aluminum Series gas power washer cleans decks, driveways, siding, fencing, equipment, and graffiti; The cold water machine is great for contractors; 49-State Compliant (Not for sale in California)
ENGINE & PUMP: HONDA GX390 engine starts easily & includes low-oil shutdown; 4200 PSI 4.0 GPM CAT triplex plunger pump includes thermal relief to prevent overheating; Advanced oil seal technology & ceramic coated pistons extend seal life
LONG HOSE REACH: The Simpson Monster series 50' dual-braided high-pressure hose resists kinks and abrasion; Non-marring polyurethane jacket helps protect finished surfaces; Threaded M22 pump/hose connection
EASY MOBILITY: 13" premium pneumatic tires roll smoothly over gravel, grass, and curbs; Balanced layout improves transport; Aircraft grade aluminum frame with powder-coated finish is easy to assemble and resists corrosion; 38" L x 23.5" W x 29" H; 133 lb
PRO PRESSURE WASHER ACCESSORIES: Five quick-connect pressure washer tips (0°, 15°, 25°, 40°, and soap nozzle) cover tasks from stripping paint to car cleaning; Professional QC spray gun with safety lock-out and 16" spray wand included

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Main Highlights

SIMPSON PRESSURE WASHER FOR PROFESSIONALS: The Simpson Aluminum Series gas power washer cleans decks, driveways, siding, fencing, equipment, and graffiti; The cold water machine is great for contractors; 49-State Compliant (Not for sale in California)
ENGINE & PUMP: HONDA GX390 engine starts easily & includes low-oil shutdown; 4200 PSI 4.0 GPM CAT triplex plunger pump includes thermal relief to prevent overheating; Advanced oil seal technology & ceramic coated pistons extend seal life
LONG HOSE REACH: The Simpson Monster series 50' dual-braided high-pressure hose resists kinks and abrasion; Non-marring polyurethane jacket helps protect finished surfaces; Threaded M22 pump/hose connection
EASY MOBILITY: 13" premium pneumatic tires roll smoothly over gravel, grass, and curbs; Balanced layout improves transport; Aircraft grade aluminum frame with powder-coated finish is easy to assemble and resists corrosion; 38" L x 23.5" W x 29" H; 133 lb
PRO PRESSURE WASHER ACCESSORIES: Five quick-connect pressure washer tips (0°, 15°, 25°, 40°, and soap nozzle) cover tasks from stripping paint to car cleaning; Professional QC spray gun with safety lock-out and 16" spray wand included

8.8

Very Good

AAA

AAA 3700 PSI 2.5 GPM Replacement Triplex Pressure Washer Pump Kit for SIMPSON Gas Power Washer Pumps, 3/4" Shaft, Horizontal Engine Fit, PowerBoost (90037)

7% Off

Main Highlights

AAA TRIPLEX REPLACEMENT POWER WASHER PUMP: Replace your SIMPSON pressure washer pump with the AAA Triplex Power Washer Pump to restore cleaning power; It offers up to 3700 PSI at 2.5 GPM and fits horizontal engines with 3/4" shaft such as the Honda GX200
EASY INSTALLATION: SAE standard bolt pattern fits many gas pressure washers with horizontal engines; To ensure compatibility, be sure to match engine orientation, PSI, GPM, engine shaft diameter, and current pump inlet and outlet connection
ADJUSTABLE PERFORMANCE: Rely on PowerBoost Technology to increase pressure at the nozzle; Turn the hand knob to match power to tasks from siding and sidewalks to fleet vehicles; Stainless steel integrated unloader supports an easy-start system
DURABILITY AND EASY MAINTENANCE: Dual oversized ball bearings reduce friction; Thermal relief valve prevents the pump overheating; The sight glass and advanced oil seal technology eliminates the need for a dipstick; Brass manifold adds durability
POWER WASHER PUMP REPLACEMENT NOTES: This gas powered pressure washer replacement pump features a garden hose inlet and threaded M22 connection for use with pressure washer attachments; Includes siphon tube, hardware, shaft key, and instructions

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Main Highlights

AAA TRIPLEX REPLACEMENT POWER WASHER PUMP: Replace your SIMPSON pressure washer pump with the AAA Triplex Power Washer Pump to restore cleaning power; It offers up to 3700 PSI at 2.5 GPM and fits horizontal engines with 3/4" shaft such as the Honda GX200
EASY INSTALLATION: SAE standard bolt pattern fits many gas pressure washers with horizontal engines; To ensure compatibility, be sure to match engine orientation, PSI, GPM, engine shaft diameter, and current pump inlet and outlet connection
ADJUSTABLE PERFORMANCE: Rely on PowerBoost Technology to increase pressure at the nozzle; Turn the hand knob to match power to tasks from siding and sidewalks to fleet vehicles; Stainless steel integrated unloader supports an easy-start system
DURABILITY AND EASY MAINTENANCE: Dual oversized ball bearings reduce friction; Thermal relief valve prevents the pump overheating; The sight glass and advanced oil seal technology eliminates the need for a dipstick; Brass manifold adds durability
POWER WASHER PUMP REPLACEMENT NOTES: This gas powered pressure washer replacement pump features a garden hose inlet and threaded M22 connection for use with pressure washer attachments; Includes siphon tube, hardware, shaft key, and instructions

8.6

Very Good

SIMPSON

SIMPSON Cleaning PS3228 PowerShot 3300 PSI Gas Pressure Washer, 2.5 GPM, Honda GX200 Engine, Includes Spray Gun and Extension Wand, 5 QC Nozzle Tips, 5/16-inch x 25-foot MorFlex Hose, 49-State

Main Highlights

SIMPSON PRESSURE WASHER FOR PROFESSIONALS: The Simpson PowerShot gas power washer cleans decks, driveways, siding, fencing, equipment, and graffiti; The cold water machine is great for contractors; 49-State Compliant (Not for sale in California)
ENGINE & PUMP: Premium Honda GX200 engine starts easily and includes low-oil shutdown; Maintenance-free 3300 PSI 2.5 GPM AAA triplex plunger pump with an integrated unloader and thermal relief to prevent overheating; Designed for a long service life
LONG HOSE REACH: The Simpson Morflex series 25' high-pressure hose resists kinks and abrasion; Non-marring polyurethane jacket helps protect finished surfaces; Pump/Hose Connection: Threaded M22 connection
EASY MOBILITY: 10" premium pneumatic tires roll smoothly over gravel, grass, and curbs; Balanced layout improves transport; The welded steel frame with powder-coated finish is easy to assemble and resists corrosion; 21" L x 24" W x 34" H; 77 lb.
PRO PRESSURE WASHER ACCESSORIES: Five quick-connect pressure washer tips (0°, 15°, 25°, 40°, and soap nozzle) cover tasks from stripping paint to car cleaning; Rear-load M22 pressure washer gun and 16" spray wand included

Check Price

Main Highlights

SIMPSON PRESSURE WASHER FOR PROFESSIONALS: The Simpson PowerShot gas power washer cleans decks, driveways, siding, fencing, equipment, and graffiti; The cold water machine is great for contractors; 49-State Compliant (Not for sale in California)
ENGINE & PUMP: Premium Honda GX200 engine starts easily and includes low-oil shutdown; Maintenance-free 3300 PSI 2.5 GPM AAA triplex plunger pump with an integrated unloader and thermal relief to prevent overheating; Designed for a long service life
LONG HOSE REACH: The Simpson Morflex series 25' high-pressure hose resists kinks and abrasion; Non-marring polyurethane jacket helps protect finished surfaces; Pump/Hose Connection: Threaded M22 connection
EASY MOBILITY: 10" premium pneumatic tires roll smoothly over gravel, grass, and curbs; Balanced layout improves transport; The welded steel frame with powder-coated finish is easy to assemble and resists corrosion; 21" L x 24" W x 34" H; 77 lb.
PRO PRESSURE WASHER ACCESSORIES: Five quick-connect pressure washer tips (0°, 15°, 25°, 40°, and soap nozzle) cover tasks from stripping paint to car cleaning; Rear-load M22 pressure washer gun and 16" spray wand included

8.3

Very Good

SIMPSON

Simpson Cleaning PS60869 PowerShot 4000 PSI Gas Pressure Washer, 3.5 GPM AAA Triplex Pump, Honda GX270 Engine, Includes Spray Gun, Wand, 5 QC Nozzle Tips, 3/8-inch x 50-Foot Monster Hose, 49-State

9% Off

Main Highlights

Professional Performance: Easy-to-assemble and easy-to-start with its Honda GX270 premium engine, the PowerShot power washer is great for contractors who specialize in deck cleaning, wood restoration, paint preparation, and all other professional services

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Main Highlights

Professional Performance: Easy-to-assemble and easy-to-start with its Honda GX270 premium engine, the PowerShot power washer is great for contractors who specialize in deck cleaning, wood restoration, paint preparation, and all other professional services

8.1

Very Good

SIMPSON

Simpson Cleaning Universal 16.5" Pressure Washer Surface Cleaner, Stainless Steel, for Gas and Electric, Cold Water, 1/4" Quick Connection, Max of 4000 PSI, 80625

24% Off

Main Highlights

Easy to Use for Driveways, Patios, and Sidewalks: Features a 1/4-inch QC connection for a universal fit that is easy to hook up to most spray wands; 16.5-inch diameter quickly and easily cleans large surfaces
More Jets, More Clean, Less Time: Two high-pressure, rotating jets provide streak-free cleaning with 10X more coverage than a standard nozzle; For best results, use a slow, steady pace while applying light pressure to maintain even distance to the ground
High Quality Materials and Construction: The stainless steel shroud and stainless steel nozzles provide protection against corrosion; The shroud also helps to prevent overspray, keeping the user and surrounding areas dryer
Includes Nozzle Cleaning Tool: Naturally-occurring buildup can gather in the nozzles over time; Weve included a nozzle cleaning tool to remove dirt and ensure a longer life at maximum performance
Compatibility and Power: This surface scrubber works with most gas-powered pressure washers with ratings between the recommended minimum 2000 PSI and 2.5 GPM up to a maximum of 4000 PSI and 4 GPM; Surface cleaner is only for cold water use; max temp 140° F

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Main Highlights

Easy to Use for Driveways, Patios, and Sidewalks: Features a 1/4-inch QC connection for a universal fit that is easy to hook up to most spray wands; 16.5-inch diameter quickly and easily cleans large surfaces
More Jets, More Clean, Less Time: Two high-pressure, rotating jets provide streak-free cleaning with 10X more coverage than a standard nozzle; For best results, use a slow, steady pace while applying light pressure to maintain even distance to the ground
High Quality Materials and Construction: The stainless steel shroud and stainless steel nozzles provide protection against corrosion; The shroud also helps to prevent overspray, keeping the user and surrounding areas dryer
Includes Nozzle Cleaning Tool: Naturally-occurring buildup can gather in the nozzles over time; Weve included a nozzle cleaning tool to remove dirt and ensure a longer life at maximum performance
Compatibility and Power: This surface scrubber works with most gas-powered pressure washers with ratings between the recommended minimum 2000 PSI and 2.5 GPM up to a maximum of 4000 PSI and 4 GPM; Surface cleaner is only for cold water use; max temp 140° F

8.1

Very Good

SIMPSON

Simpson Cleaning 80273 Pressure Washer Pump Guard 4 fl. oz. Aerosol Can

Main Highlights

Protect During Storage: Protect your pressure washer pumps when storing for the season
Piston and Seal Protector: Lubricates pistons and seals to protect the pump
Cold Temperature Protections: Acts as antifreeze and winterizer to protects power washer parts in temperatures as low as -25°F
Pressure Washer Compatibility: Compatible with either gas or electric pressure washers
How to Use: Turn engine to the off position; inject Pump Guard into hose input

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Main Highlights

Protect During Storage: Protect your pressure washer pumps when storing for the season
Piston and Seal Protector: Lubricates pistons and seals to protect the pump
Cold Temperature Protections: Acts as antifreeze and winterizer to protects power washer parts in temperatures as low as -25°F
Pressure Washer Compatibility: Compatible with either gas or electric pressure washers
How to Use: Turn engine to the off position; inject Pump Guard into hose input

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